 Hosford yield criterion

The Hosford yield criterion is a mathematical model used in materials science and engineering to predict the yield behavior of materials, particularly metals, under complex loading conditions. Developed by W. F. Hosford in the 1970s, this criterion is particularly useful for analyzing the plastic deformation of materials that exhibit anisotropic properties, meaning their mechanical response can vary based on direction. The Hosford yield criterion can be expressed in terms of the invariants of the stress tensor.